Link from crash message to the troubleshooting guide (#1348)

Re #1309

docs/user-guide/troubleshooting.md

+<!--
+-----------------NOTICE------------------------
+This file is referenced in code as
+https://github.com/kubernetes/dashboard/blob/master/docs/user-guide/troubleshooting.md
+Do not move it without providing redirects.
+-----------------------------------------------
+-->
+
 # Troubleshooting
 
 ## Authentication to the Kubernetes API Server

src/app/backend/dashboard.go

@@ -88,5 +88,7 @@ func handleFatalInitError(err error) {
 	log.Fatalf("Error while initializing connection to Kubernetes apiserver. "+
 		"This most likely means that the cluster is misconfigured (e.g., it has "+
 		"invalid apiserver certificates or service accounts configuration) or the "+
-		"--apiserver-host param points to a server that does not exist. Reason: %s", err)
+		"--apiserver-host param points to a server that does not exist. Reason: %s\n"+
+		"Refer to the troubleshooting guide for more information: "+
+		"https://github.com/kubernetes/dashboard/blob/master/docs/user-guide/troubleshooting.md", err)
 }